Corner Stone

2-star i) 5a, 45m. Behind block and climb corners to base of main coner. ii) 5b, 55m. Climb up the double crack corner and belay at its top. iii) 4b, 20m. Climb up left to under the overhang. Traverse right under the overhang and then out onbto slabs. Belay under shoulder before joining Castles in the sky. iv) Climb up boldly onto shoulder to join a basalt seam then continue up on easier angle to break. Climb up and left to corner and climb this to the top